Remove hardcoded configuration

The hardcoded configuration was replaced with CLI
configuration options. CLI based config was chosen
over a config file as it does not access and clutter
the user's file system. By CLI options depend on whether
the program is run in Alice or Bob mode.

swap/src/cli.rs

@@ -1,19 +1,44 @@
+use libp2p::core::Multiaddr;
+use url::Url;
+
 #[derive(structopt::StructOpt, Debug)]
-pub struct Options {
-    /// Run the swap as Alice.
-    #[structopt(long = "as-alice")]
-    pub as_alice: bool,
+pub enum Options {
+    Alice {
+        /// Run the swap as Bob and try to swap this many BTC (in satoshi).
+        #[structopt(long = "sats")]
+        satoshis: u64,
 
-    /// Run the swap as Bob and try to swap this many XMR (in piconero).
-    #[structopt(long = "picos")]
-    pub piconeros: Option<u64>,
+        // /// Run the swap as Bob and try to swap this many XMR (in piconero).
+        // #[structopt(long = "picos", conflicts_with = "sats"))]
+        // pub piconeros: u64,
+        #[structopt(default_value = "http://127.0.0.1:8332", long = "bitcoind")]
+        bitcoind_url: Url,
 
-    /// Run the swap as Bob and try to swap this many BTC (in satoshi).
-    #[structopt(long = "sats")]
-    pub satoshis: Option<u64>,
+        #[structopt(default_value = "127.0.0.1", long = "listen_addr")]
+        listen_addr: String,
 
-    /// Alice's onion multitaddr (only required for Bob, Alice will autogenerate
-    /// one)
-    #[structopt(long)]
-    pub alice_address: Option<String>,
+        #[structopt(default_value = 9876, long = "list_port")]
+        listen_port: u16,
+    },
+    Bob {
+        /// Alice's multitaddr (only required for Bob, Alice will autogenerate
+        /// one)
+        #[structopt(long = "alice_addr")]
+        alice_addr: Multiaddr,
+
+        /// Run the swap as Bob and try to swap this many BTC (in satoshi).
+        #[structopt(long = "sats")]
+        satoshis: u64,
+
+        // /// Run the swap as Bob and try to swap this many XMR (in piconero).
+        // #[structopt(long = "picos", conflicts_with = "sats"))]
+        // pub piconeros: u64,
+        #[structopt(default_value = "http://127.0.0.1:8332", long = "bitcoind")]
+        bitcoind_url: Url,
+        // #[structopt(default_value = "/ip4/127.0.0.1/tcp/9876", long = "dial")]
+        // alice_addr: String,
+        #[cfg(feature = "tor")]
+        #[structopt(long = "tor")]
+        tor_port: u16,
+    },
 }